394610470728 has 16 divisors (see below), whose sum is σ = 986526176880. Its totient is φ = 131536823568.

The previous prime is 394610470721. The next prime is 394610470733. The reversal of 394610470728 is 827074016493.

It is not an unprimeable number, because it can be changed into a prime (394610470721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8221051450 + ... + 8221051497.

It is an arithmetic number, because the mean of its divisors is an integer number (61657886055).

Almost surely, 2^394610470728 is an apocalyptic number.

It is an amenable number.

394610470728 is an abundant number, since it is smaller than the sum of its proper divisors (591915706152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394610470728 is a wasteful number, since it uses less digits than its factorization.

394610470728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16442102956 (or 16442102952 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 394610470728 in words is "three hundred ninety-four billion, six hundred ten million, four hundred seventy thousand, seven hundred twenty-eight".